{"product_id":"osg-1137100-straight-flute-tap-1-1-8-7-unc-hss","title":"Osg 1137100 Straight Flute Tap 1-1\/8-7 Unc Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG 1137100 is a straight flute plug tap designed for cutting internal right-hand threads to the 1-1\/8-7 UNC standard. Built from high-speed steel with a bright uncoated finish, it delivers consistent thread form in a wide range of ferrous and non-ferrous materials. The plug chamfer  -  typically 3 to 5 threads  -  allows the tap to start easily and is well suited for through-hole applications. With 4 flutes and an H4 thread limit, this tap holds close tolerances and meets a 3B class of fit. Machinists, tool-and-die technicians, and maintenance professionals use it for production and repair threading operations on manual machines, CNC tapping arms, and drill presses.\u003c\/p\u003e\n\u003cp\u003eThe OSG 1137100 Series 101 tap is suited for threading aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel. At a 1-1\/8-7 UNC thread size, it is commonly used in heavy equipment, structural fabrication, die sets, and industrial maintenance applications where a coarse-pitch unified thread is required. The 5-7\/16 inch overall length provides clearance for standard tap holders and machine spindles. It is sold as a single tap per package.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1-1\/8-7 UNC thread form with 3B class of fit and H4 thread limit for precise tolerance control\u003c\/li\u003e\n  \u003cli\u003ePlug chamfer (3 to 5 lead threads) for easy starting in through-hole applications\u003c\/li\u003e\n  \u003cli\u003e4-flute design provides rigidity and chip control in a broad range of machinable materials\u003c\/li\u003e\n  \u003cli\u003eHigh-speed steel construction offers good toughness and wear resistance in general-purpose threading\u003c\/li\u003e\n  \u003cli\u003eBright uncoated finish  -  no coating buildup to affect thread tolerance\u003c\/li\u003e\n  \u003cli\u003eRight-hand thread direction; compatible with standard tap holders and tapping attachments\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in aluminum, cast aluminum, cast iron, low-carbon steel, medium-carbon steel, and high-carbon steel workpieces. Fits standard tap holders and collets sized for a 0.896 inch shank diameter. Suitable for manual and machine tapping operations requiring a 1-1\/8-7 UNC internal thread.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis tap is installed and operated by a machinist or maintenance technician using a tap wrench, tapping arm, or CNC spindle set to the correct tapping speed and feed for the workpiece material. Always ensure the workpiece is securely fixtured and the tap is properly aligned with the pilot hole before engagement. Use an appropriate cutting fluid for the material being tapped to extend tool life and improve finish. Inspect the tap for wear or chipping before each use  -  a damaged tap can seize and break in the hole.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1-1\/8-7 UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreads per Inch\u003c\/strong\u003e: 7\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClass of Fit\u003c\/strong\u003e: 3B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Limit\u003c\/strong\u003e: H4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChamfer Type\u003c\/strong\u003e: Plug\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 2-9\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 5-7\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.896 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Length\u003c\/strong\u003e: 0.875 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSquare Size\u003c\/strong\u003e: 0.672 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNeck Length\u003c\/strong\u003e: 2.9494 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: High-Speed Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Application\u003c\/strong\u003e: Aluminum, Cast Aluminum, Cast Iron, Low-Carbon Steel, Medium-Carbon Steel, High-Carbon Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 101\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.82 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: OSG\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 1137100\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51740162949426,"sku":"1137100","price":263.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/8acc654b232771e302183c4bcbd5bac6_5d635f92-8d00-43b4-92b3-890593174459.jpg?v=1788823049","url":"https:\/\/voomisupply.com\/products\/osg-1137100-straight-flute-tap-1-1-8-7-unc-hss","provider":"Voomi Supply","version":"1.0","type":"link"}